Left over brewers solids are great protein. With all the starch removed it should not be so bad as straight grain. I know its really good for cows too; they don't fart much after eating it.

Spent brewer's grain has been used a long time and works well, especially when combined with yeast. It is best pelletized as loose grain and yeast fouls up the works. The article on tilapia nutrition was totally debunked. The guy has something he was sellling and needed to slam tilapia. Tilapia has fewer omega 3 than cod, but way more than beef or chicken. Funny he wasn't slamming them.

I also feed spent grain and coffee grounds to my worms, then feed the worms to the fish. Far less messy as I don't have a way to make pellets yet.

I get my grain from local brew pubs and the spent grounds from the office.

I think there has been some increased bad e. coli found in cattle that are fed brewer waste. Over in future of our food I think Angie has put some links about it.

The thing with tilapia and catfish and the omega is more about the really high Omega 6 in relation to the Omega 3 when you are dealing with grain fed fish. Wild caught are much healthier in the ratios of omegas. So, the more natural a diet we can feed our fish, the healthier they will likely be for us to eat. Out of balance omegas can cause issues with inflammation which in turn can lead to pain therefore causing us to take more drugs and pain killers which usually have negative side effects and the cycle goes on.

As far as pellet making goes..... I looked at a few of the pellet mills and definitely way out of my budget for a backyard item. But...... if you are interested in trying to make up something of a home made pellet, I was thinking of making up something like dough and running it through a meat grinder (minus the cutting blade) like making meat grinder "spaghetti" and cut the "noodles" to appropriate lengths (like pellets) and then let them dry before storing them. They would be light and definitely only useful as floating pellets I'm sure. I'm not sure how well it would work for all materials but I've done something like this with vital wheat gluten, wheat flower and sweet potato flower to make a kind of noodles and egg. Would be pretty time consuming to make such though.